Ref ID : 3162
Y. Homma, J.W. Sitton, R.J. Cook, and K.M. Old; Perforation and destruction of pigmented hyphae of Gaeumannomyces graminis by vampyrellid amoebae from Pacific Northwest wheat field soils. Phytopathology 69:1118-1122, 1979
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Vampyrellid amoebae were isolated from two Pacific Northwest wheat field soils by burying pigmented hyphae of Gaeumannomyces graminis var. tritici as bait for 4-8 wk. The amoebae caused holes (average diameter 1.7 µm) and numerous annular depressions (incomplete holes) in the hyphae. The annular depressions, holes, and the amoebae that caused them all matched those previously described from Scotland and Canada. The amoebae caused perforations of conidia of Cochliobolus sativus in water cultures. The time from initial contact of a hyphal cell by the pseudopodium of an amoebae until the cell was empty of contents ranged from 40 to 90 min.